Miniaturized electrical connector for compact electronic system
The present disclosure provides an electrical connector. The electrical connector comprises an insulative housing and a plurality of terminals disposed in the insulative housing. The insulative housing comprises a top face, a bottom face opposite to the top face, and a plurality of side faces extending between the top face and the bottom face. A corner portion between at least two adjacent side faces of the side faces is formed as a chamfered surface. Such a configuration reduces the dimension of the electrical connector, enables a more compact arrangement of components on the electronic system, and enables the dimension of the electronic system to be reduced, such that the entire assembly, including the electrical connector and the electronic system, can be manufactured at a lower cost and can be more compact and more lightweight.
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This application claims priority to and the benefit of Chinese Patent Application Serial No. 202021855660.5, filed on Aug. 31, 2020. The entire contents of this application are incorporated herein by reference in their entirety.
FIELDThis application relates to electrical connectors, and in particular to an electrical connector for providing an electrical connection between electronic systems, such as printed circuit boards (PCBs).
BACKGROUNDElectrical connectors may be used to electrically connect different electronic systems together. One typical electrical connector is a card edge connector that may be mounted onto a first electronic system, such as a motherboard, such that tail portions of terminals of the card edge connector may be electrically connected to conductive portions of the first electronic system by, for example, soldering. The card edge connector may also act as a female connector for interfacing directly with conductive portions on or near an edge of a PCB of a second electronic system, such as a daughter card, such that the conductive portions of the second electronic system are in contact with the contact portions of the corresponding terminals of the card edge connector. In this case, the PCB itself acts as a male connector for interfacing with the card edge connector, without the need for a separate male connector. In this way, the conductive portions of the second electronic system may be electrically connected to the corresponding conductive portions of the first electronic system via the terminals of the card edge connector, thereby establishing an electrical connection between the first electronic system and the second electronic system. This makes it possible to manufacture individual PCBs for a specific purpose and then electrically connect the individual PCBs together using the card edge connector(s) to form a desired system, rather than manufacturing the entire system as a single component.
BRIEF SUMMARYAspects of the present disclosure relate to miniaturized electrical connectors for compact electronic systems.
Some embodiments relate to an electrical connector. The electrical connector may include an insulative housing, and a plurality of terminals disposed in the insulative housing. The insulative housing may include a top face comprising a socket, a bottom face opposite to the top face, and a plurality of side faces extending between the top face and the bottom face, the plurality of side faces comprising first and second side faces extending perpendicularly to each other. Each of the plurality of terminals may include a contact portion and a tail portion, the contact portion being accessible through the socket of the insulative housing, and the tail portion protruding from the bottom face of the insulative housing. The insulative housing comprises a chamfered surface connecting one of the first side faces and one of the second side faces.
In some embodiments, the insulative housing may include a platform projecting outwardly at one end of the insulative housing that is proximate to the bottom face.
In some embodiments, the platform may include a corner portion comprising the chamfered surface.
In some embodiments, the chamfered surface may be a first chamfered surface. The platform may include a second chamfered surface such that the platform has a trapezoidal shape.
In some embodiments, the plurality of terminals may be arranged in two terminal rows mutually opposed and spaced apart in the insulative housing, with the terminals in each terminal row aligned therein.
In some embodiments, the electrical connector may include at least one retention mechanism for retaining the plurality of terminals in place relative to each other.
In some embodiments, the at least one retention mechanism may be overmolded around the plurality of terminals.
In some embodiments, the insulative housing may include the at least one retention mechanism.
In some embodiments, the at least one retention mechanism may be formed separately from the insulative housing and removably mounted into the insulative housing.
In some embodiments, the retention mechanism may include two halves having interlocking mechanisms. Each half may retain a terminal row formed by some of the plurality of terminals.
In some embodiments, the electrical connector may include a positioning mechanism for ensuring a proper positioning of the electrical connector on the electronic system when the electrical connector is mounted to an electronic system.
In some embodiments, the electrical connector may include a fixing mechanism for fixing the electrical connector to an electronic system.
In some embodiments, the electrical connector may be a vertical connector or a right angle connector.
In some embodiments, the electronic system may be a printed circuit board.
In some embodiments, the one of the first side faces may extend in a first plane. The one of the second side faces may extend in a second plane. The first plane and the second plane may cross each other along a line. The chamfered surface may be spaced from the line by a distance no less than 0.36 mm.
In some embodiments, the platform may include slots for receiving tabs.
Some embodiments relate to an electronic system. The electronic system may include a printed circuit board; and an electrical connector. The electrical connector may include an insulative housing and a plurality of terminals disposed in the insulative housing. The insulative housing may include a socket, a bottom face mounted against the printed circuit board, and a plurality of side faces extending perpendicular to the bottom face, the plurality of side faces comprising first and second side faces extending perpendicularly to each other. Each of the plurality of terminals may include a contact portion and a tail portion, the contact portion being accessible through the socket of the insulative housing, and the tail portion protruding from the bottom face of the insulative housing. The printed circuit board may include a first edge and a second edge and curved corner joining the first edge and the second edge. The electrical connector may be mounted to the printed circuit board with the first side face adjacent and parallel to the first edge and the second side face adjacent and parallel to the second edge. The insulative housing may include an angled surface connecting the first side face and the second side face. The angled surface may be mounted adjacent the curved corner.
In some embodiments, the insulative housing may include a socket portion including the socket and at least one platform extending from the socket portion in a direction parallel to the bottom face. The angled surface may include a surface of a platform of the at least one platform.
In some embodiments, the platform may be a first platform. The at least one platform may include a second platform, extending from the socket portion in a direction opposite the first platform. The angled surface may be a first angled surface. The second platform may include a second angled surface.
In some embodiments, the electronic system may include a plurality of fixing tabs extending through the first platform and the second platform and engaging the electrical connector to the printed circuit board
Some embodiments relate to an electrical connector. The electrical may include an insulative housing comprising a top face, a bottom face opposite to the top face and a plurality of side faces extending between the top face and the bottom face; and a plurality of terminals disposed in the insulative housing, each of the plurality of terminals comprising a contact portion and a tail portion, the contact portion being accessible through a socket in the insulative housing, and the tail portion protruding from the bottom face and configured to be mounted to an electronic system. A corner portion between at least two adjacent side faces of the side faces is formed as a chamfered surface.
In some embodiments, a portion of at least one end of the insulative housing that is proximate to the bottom face may project outwardly to form a platform.
In some embodiments, the chamfered surface may be formed at a corner portion of the platform.
In some embodiments, each of two corner portions of the platform may be formed as the chamfered surface such that the platform has a trapezoidal shape.
In some embodiments, the plurality of terminals may be arranged in two terminal rows mutually opposed and spaced apart in the insulative housing, with the terminals in each terminal row aligned therein.
In some embodiments, the electrical connector may include at least one retention mechanism for retaining the plurality of terminals in place relative to each other.
In some embodiments, the at least one retention mechanism may be overmolded around the plurality of terminals.
In some embodiments, the at least one retention mechanism may be provided by the insulative housing.
In some embodiments, the at least one retention mechanism may be formed separately from the insulative housing and removably mounted into the insulative housing.
In some embodiments, the retention mechanism may include two halves having interlocking mechanisms, each half retaining a terminal row formed by some of the plurality of terminals.
In some embodiments, the electrical connector may include a positioning mechanism provided on the insulative housing for ensuring a proper positioning of the electrical connector on the electronic system when the electrical connector is mounted to the electronic system.
In some embodiments, the electrical connector may include a fixing mechanism provided on the insulative housing for fixing the electrical connector to the electronic system.
In some embodiments, the electrical connector may be a vertical connector or a right angle connector.
In some embodiments, the electronic system may be a printed circuit board.
In some embodiments, the corner portion being formed as the chamfered surface may allow the corner portion to be indented inward by at least 0.36 mm, as compared to the case where the corner portion is not formed as the chamfered surface.
These techniques may be used alone or in any suitable combination. The foregoing summary is provided by way of illustration and is not intended to be limiting.
The above and other aspects of the present disclosure will be more thoroughly understood and appreciated below when read in conjunction with the appended drawings. It should be noted that the appended drawings are only schematic and are not drawn to scale. In the appended drawings:
100 vertical connector
101 housing
103 top face
105 bottom face
107 front side face
109 rear side face
111 left side face
113 right side face
115 first retention mechanism
117 second retention mechanism
119 first socket
121 second socket
123 positioning protrusion
125 fixing tab
127 receiving slot
129 first platform
131 second platform
133 chamfered surface
200 terminals
201 tip portion
203 contact portion
205 body portion
207 tail portion
210 ground terminal
220 first signal terminal
230 second signal terminal
240 additional ground terminal
300 terminal row
400 printed circuit board
401 edge.
DETAILED DESCRIPTIONDisclosed herein is a miniaturized electrical connector. The electrical connector may include an insulative housing and a plurality of terminals disposed in the insulative housing. The insulative housing may include a top face, a bottom face opposite to the top face, and a plurality of side faces extending between the top face and the bottom face. Each of the plurality of terminals may include a contact portion and a tail portion. The contact portion may be accessible through a socket in the insulative housing, and the tail portion may protrude from the bottom face and may be capable of being mounted to an electronic system. A corner portion between at least two adjacent side faces of the side faces may be formed as a chamfered surface.
Such configuration may reduce the dimension of the electrical connector. For example, when the electrical connector is mounted to an electronic system such as a PCB, the electrical connector may occupy less space and be disposed closer to other components on the electronic system, enabling a more compact arrangement of the components on the electronic system. Alternatively or additionally, the electrical connector may be disposed closer to an edge of the electronic system, such that the space utilization on the electronic system can be optimized. These also enable the dimension of the electronic system to be reduced, such that the entire assembly, including the electrical connector and the electronic system, can be manufactured at a lower cost and can be more compact and more lightweight.
The electrical connectors of the present disclosure may be various types of card edge connectors, including but not limited to, vertical connectors and right angle connectors. Preferred embodiments of the present disclosure are described in detail below in conjunction with some examples. It should be appreciated by the skilled person in the art that these embodiments are not meant to form any limitation on the present disclosure.
The vertical connector 100 according to a preferred embodiment of the present disclosure will be described below in conjunction with
The vertical connector 100 may further include a plurality of terminals 200 housed in the housing 101. Each of the plurality of terminals 200 may be formed of a conductive material. Conductive materials that are suitable for forming the terminals 200 may be a metal, such as copper, or a metal alloy. A set of three terminals 200 may be configured for transmitting differential signals between a first electronic device (e.g., a motherboard) and a second electronic device (e.g., a daughter board).
Turning to
The first signal terminal 220 and the second signal terminal 230 may constitute a differential signaling pair. Each of the ground terminal 210, the first signal terminal 220 and the second signal terminal 230 includes a tip portion 201, a contact portion 203, a body portion 205 and a tail portion 207. The tail portion 207 may be configured for being connected to a first PCB (e.g., a motherboard). The contact portion 203 may be configured to establish an electrical contact with a conductive portion of another electronic system (e.g., another PCB).
In some examples, the distance D1 between the distal ends of the tip portion 201 of the first signal terminal 220 and the tip portion 201 of the second signal terminal 230 is equal to the distance D2 between the distal ends of the tip portion 201 of the first signal terminal 220 and the tip portion 201 of the ground terminal 210. In some examples, the distance D3 between the contact portion 203 of the first signal terminal 220 and the contact portion 203 of the second signal terminal 230 is equal to the distance D4 between the contact portion 203 of the first signal terminal 220 and the contact portion 203 of the ground terminal 210. In some examples, the distances D3 and D4 are less than the distances D1 and D2, respectively. As a non-limiting example, D1 and D2 may be equal to 0.6 mm, and D3 and D4 may be equal to 0.38 mm. The vertical connector 100 has a terminal pitch equal to D1. Thus, in the example where D1 is equal to 0.6 mm, the vertical connector 100 may be referred to as a 0.6 mm card edge connector.
A plurality of sets of three terminals 200 may be arranged in terminal rows, with the terminals in each terminal row aligned therein.
As shown in
In some embodiments, the vertical connector 100 may include at least one retention mechanism for retaining the plurality of terminals 200 in place relative to each other. The retention mechanism may be partially or entirely formed of an insulative material. Examples of insulative materials that are suitable for forming the retention mechanism include, but are not limited to, plastic, nylon, liquid crystal polymer (LCP), polyphenyline sulfide (PPS), high temperature nylon or polyphenylenoxide (PPO) or polypropylene (PP).
At least one retention mechanism may be overmolded around the plurality of terminals 200. In some examples, the at least one retention mechanism may be formed separately from the housing 101 and then removably mounted into the housing 101. Turning back to
Then, the first retention mechanism 115 and the second retention mechanism 117 may be fitted into the housing 101, thereby retaining the terminal rows in the housing 101. In some examples, the first retention mechanism 115 and the second retention mechanism 117 may be provided with snap fit mechanisms for cooperating with corresponding mechanisms of the housing 101 so as to secure the retention mechanisms in the housing 101. In some examples, as shown in
As shown in
The top face 103 of the housing 101 of the vertical connector 100 may include at least one socket for allowing the contact portion 203 of each of the plurality of terminals 200 to be accessible therethrough. For example, the second PCB (e.g., a daughter board) may be inserted into the at least one socket, such that conductive portions (e.g., conductive traces) of the second PCB are arranged in contact with the contact portions 203 of the corresponding terminals 200. For example, the conductive portions of the second PCB may be received between two terminal rows mutually opposed and in contact with the contact portions 203 of the corresponding terminals 200. In this way, the conductive portions of the second PCB may be electrically connected to the corresponding conductive portions of the first PCB via the terminals 200, thereby establishing an electrical connection between the second PCB and the first PCB. The first PCB and the second PCB may communicate with each other by transmitting signals via the vertical connector 100 using a standardized protocol, such as a PCI protocol. Two sockets, i.e., a first socket 119 and a second socket 121, are shown in
The vertical connector 100 may further include a positioning mechanism provided on the housing 101 for ensuring a proper positioning of the vertical connector 100 on the first PCB when the vertical connector 100 is mounted to the first PCB. For example, the positioning mechanism may be in the form of a positioning protrusion, with two positioning protrusions 123 shown in
The vertical connector 100 may further include a fixing mechanism for fixing the vertical connector 100 to the first PCB. For example, the fixing mechanism may be in the form of a fixing tab, with three fixing tabs 125 shown in
In order to minimize a space occupied by the vertical connector 100 on the first PCB, a corner portion between at least two adjacent side faces of the side faces of the housing 101 may be formed as a chamfered surface 133 so as to reduce the space occupied by the housing 101 on the first PCB. In some examples, the corner portion between at least two adjacent side faces of the front side face 107, the rear side face 109, the left side face 111 and the right side face 113 of the housing 101 is formed as a chamfered surface 133. In some examples, all of the corner portions between adjacent side faces of the housing 101 are formed as chamfered surfaces 133. In some examples, the corner portions between adjacent side faces of the housing 101 proximate to an edge of the first PCB are each formed as a chamfered surface 133.
In conventional vertical connectors, the corner portions between adjacent side faces are typically formed as rounded or beveled portions. As compared with conventional vertical connectors, the corner portions between adjacent side faces of the vertical connector 100 being formed as chamfered surfaces may reduce a dimension of the vertical connector 100 and thus reduce the space occupied by the housing 101 on the first PCB. As such, the vertical connector 100 may be disposed closer to other components on the first PCB, thereby allowing for a more compact arrangement of components on the PCB. In addition, the vertical connector 100 may also be disposed closer to an edge of the first PCB, such that the space utilization on the first PCB may be optimized. These allow for reducing the dimension of the PCB, such that the entire assembly, including the vertical connector and PCB, may be manufactured at a lower cost, and may be more miniaturized and more lightweight.
In some embodiments, portions of opposite ends of the housing 101 that are proximate to the bottom face 105 may protrude outward to form a platform. As shown in
As shown in
Although the present disclosure is described in detail above in connection with a vertical connector, it should be appreciated that the present disclosure is also applicable to right angle connectors. Unlike the vertical connector 100, in a right angle connector, a socket is formed in a side face of the insulative housing, rather than a top face thereof, and terminals of the right angle connector are configured such that contact portions of the terminals are accessible via the socket. For example, the right angle connector may be used to connect a mezzanine card to a mother board. In some examples, the right angle connector may be configured to be mounted to a first PCB (such as a motherboard), such that the tail portions of the terminals of the right angle connector are electrically connected to the conductive portions (for example, conductive traces) of the first PCB. A second PCB (such as a mezzanine card) may be inserted into the socket such that the conductive portions of the second PCB are disposed in contact with the contact portions of the corresponding terminals. In this way, the conductive portions of the second PCB may be electrically connected to the corresponding conductive portions of the first PCB via the terminals of the right angle connector, thereby establishing an electrical connection between the second PCB and the first PCB. The first PCB and the second PCB may communicate with each other by transmitting signals using the right angle connector using a standardized protocol, such as a PCI protocol.
It should also be appreciated that the terms “first” and “second” are only used to distinguish an element or component from another element or component, and that these elements and/or components should not be limited by the terms.
The present disclosure has been described in detail in conjunction with specific embodiments. Obviously, the above description and the embodiments shown in the appended drawings should be understood to be exemplary and do not constitute a limitation on the present disclosure. For the person skilled in the art, various variations or modifications falling within the scope of the present disclosure can be made without departing from the spirit of the present disclosure.
Claims
1. An electrical connector, comprising:
- an insulative housing comprising a top face comprising a socket, a bottom face opposite to the top face, and a plurality of side faces extending between the top face and the bottom face, the plurality of side faces comprising a first side face, a second side face extending perpendicularly to the first side face, a third side face extending perpendicular to the first side face, and a fourth side face extending perpendicular to the second side face; and
- a plurality of terminals disposed in the insulative housing, each of the plurality of terminals comprising a contact portion and a tail portion, the contact portion being accessible through the socket of the insulative housing, and the tail portion protruding from the bottom face of the insulative housing;
- wherein the insulative housing comprises a first chamfered surface connecting the first side face and the second side face, a second chamfered surface connecting the second side face and the fourth side face, and a third chamfered surface connecting the third side face and the fourth side face.
2. An electrical connector, comprising:
- an insulative housing comprising a top face comprising a socket, a bottom face opposite to the top face, and a plurality of side faces extending between the top face and the bottom face, the plurality of side faces comprising a first side face, a second side face extending perpendicularly to the first side face, and a third side face extending perpendicular to the first side face; and
- a plurality of terminals disposed in the insulative housing, each of the plurality of terminals comprising a contact portion and a tail portion, the contact portion being accessible through the socket of the insulative housing, and the tail portion protruding from the bottom face of the insulative housing, wherein:
- the insulative housing comprises a platform projecting outwardly at one end of the insulative housing that is proximate to the bottom face and comprising the second side face; and
- the insulative housing comprises a first chamfered surface connecting the first side face and the first side face, and a second chamfered surface connecting the second side face and the fourth side face.
3. The electrical connector of claim 1, wherein:
- the insulative housing comprises first and second platforms projecting outwardly at opposite ends of the insulative housing, respectively;
- the first platform comprises the second side face; and
- the second platform comprises the third side face.
4. The electrical connector of claim 3, wherein:
- the first platform comprises the first chamfered surface and the second chamfered surface such that the first platform has a trapezoidal shape; and
- the second platform comprises the third chamfered surface and the fourth chamfered surface such that the second platform has a trapezoidal shape.
5. The electrical connector of claim 1, wherein the plurality of terminals are arranged in two terminal rows mutually opposed and spaced apart in the insulative housing, with the terminals in each terminal row aligned therein.
6. The electrical connector of claim 1, further comprising:
- at least one retention mechanism for retaining the plurality of terminals in place relative to each other.
7. The electrical connector of claim 6, wherein the at least one retention mechanism is overmolded around the plurality of terminals.
8. The electrical connector of claim 6, wherein the insulative housing comprises the at least one retention mechanism.
9. The electrical connector of claim 6, wherein the at least one retention mechanism is formed separately from the insulative housing and removably mounted into the insulative housing.
10. The electrical connector of claim 9, wherein the retention mechanism comprises two halves having interlocking mechanisms, each half retaining a terminal row formed by some of the plurality of terminals.
11. The electrical connector of claim 1, further comprising:
- a positioning mechanism for ensuring a proper positioning of the electrical connector on an electronic system when the electrical connector is mounted to the electronic system.
12. The electrical connector of claim 1, further comprising:
- a fixing mechanism for fixing the electrical connector to an electronic system.
13. The electrical connector of claim 1, wherein the electrical connector is a vertical connector or a right angle connector.
14. The electrical connector of claim 12, wherein the electronic system is a printed circuit board.
15. The electrical connector of claim 1, wherein:
- the first side face extends in a first plane,
- the second side face extends in a second plane,
- the first plane and the second plane cross each other along a line, and
- the first chamfered surface is spaced from the line by a distance no less than 0.36 mm.
16. The electrical connector of claim 2, wherein:
- the platform comprises slots for receiving tabs.
17. An electronic system, comprising:
- a printed circuit board; and
- an electrical connector comprising: an insulative housing comprising a socket, a bottom face mounted against the printed circuit board, and a plurality of side faces extending perpendicular to the bottom face, the plurality of side faces comprising first and second side faces extending perpendicularly to each other; and a plurality of terminals disposed in the insulative housing, each of the plurality of terminals comprising a contact portion and a tail portion, the contact portion being accessible through the socket of the insulative housing, and the tail portion protruding from the bottom face of the insulative housing;
- wherein: the printed circuit board comprises a first edge and a second edge and curved corner joining the first edge and the second edge; the electrical connector is mounted to the printed circuit board with the first side face adjacent and parallel to the first edge and the second side face adjacent and parallel to the second edge; and the insulative housing comprises an angled surface connecting the first side face and the second side face, the angled surface being mounted adjacent to the curved corner.
18. The electronic system of claim 17, wherein:
- the insulative housing comprises a socket portion including the socket and at least one platform extending from the socket portion in a direction parallel to the bottom face; and
- the angled surface comprises a surface of a platform of the at least one platform.
19. The electronic system of claim 18, wherein:
- the platform is a first platform;
- the at least one platform comprises a second platform, extending from the socket portion in a direction opposite the first platform;
- the angled surface is a first angled surface; and
- the second platform comprises a second angled surface.
20. The electronic system of claim 19, further comprising:
- a plurality of fixing tabs extending through the first platform and the second platform and engaging the electrical connector to the printed circuit board.
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Type: Grant
Filed: Aug 13, 2021
Date of Patent: Nov 14, 2023
Patent Publication Number: 20220069496
Assignee: Amphenol Commercial Products (Chengdu) Co., Ltd. (Chengdu)
Inventors: Luyun Yi (Chengdu), Jing Wang (Chengdu)
Primary Examiner: Marcus E Harcum
Application Number: 17/402,255
International Classification: H01R 12/72 (20110101); H01R 12/73 (20110101);